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标题: 大强子对撞机的惊人照片 [打印本页]

作者: Mallon 时间: 2008-8-3 16:17 标题: 大强子对撞机的惊人照片

http://science.solidot.org/science/08/08/03/054244.shtml

大型强子对撞器（Large Hadron Collider，LHC），全长27公里的粒子加速器与对撞机，贯穿瑞士与法国边境，位于地下50至150米之间，隧道直径三米。加速管由超导磁铁所包覆，以液态氦冷却至-271.25 C。Boston.com收集了来自欧洲粒子物理研究所的27幅照片，展示了大型强子对撞器不同时期的内外部结构，非常漂亮。

作者: Mallon 时间: 2008-8-3 16:17

The Large Hadron Collider (LHC), a 27 kilometer (17mile) long particle accelerator straddling the border of Switzerlandand France, is nearly set to begin its first particle beam tests. TheEuropean Organization for Nuclear Research (CERN) is preparing for itsfirst small tests in early August, leading to a planned full-track testin September - and the first planned particle collisions before the endof the year. The final step before starting is the chilling of theentire collider to -271.25 C (-456.25 F). Here is a collection ofphotographs from CERN, showing various stages of completion of the LHCand several of its larger experiments (some over seven stories tall),over the past several years. (27 photos total)

Viewof the CMS (Compact Muon Solenoid) experiment Tracker Outer Barrel(TOB) in the cleaning room. The CMS is one of two general-purpose LHCexperiments designed to explore the physics of the Terascale, theenergy region where physicists believe they will find answers to thecentral questions at the heart of 21st-century particle physics.(Maximilien Brice, © CERN)

TheGlobe of Innovation in the morning. The wooden globe is a structureoriginally built for Switzerland's national exhibition, Expo'02, and is40 meters wide, 27 meters tall. (Maximilien Brice; Claudia Marcelloni,© CERN)

Assemblyand installation of the ATLAS Hadronic endcap Liquid Argon Calorimeter.The ATLAS detector contains a series of ever-larger concentriccylinders around the central interaction point where the LHC's protonbeams collide. (Roy Langstaff, © CERN)

Checksare performed on the alignment of the magnets in the LHC tunnel. It isvital that each magnet is placed exactly where it has been designed sothat the path of the beam is precisely controlled. (Maximilien Brice, ©CERN)

TheALICE Inner Tracking System during its transport in the experimentalcavern and its insertion into the Time Projection Chamber (TPC). ALICE(A Large Ion Collider Experiment @ CERN) will study the physics ofultrahigh-energy proton-proton and lead-lead collisions and willexplore conditions in the first instants of the universe, a fewmicroseconds after the Big Bang. (Maximilien Brice, © CERN)

Insertion of the tracker in the heart of the CMS detector. (Maximilien Brice, © CERN)

TheLHCb electromagnetic calorimeter. This huge 6X7 square meter wallconsists of 3300 blocks containing scintillator, fibre optics and lead.It will measure the energy of particles produced in proton-protoncollisions at the LHC when it is started. Photons, electrons andpositrons will pass through the layers of material in these modules anddeposit their energy in the detector through a shower of particles.(Maximilien Brice, © CERN)

Photofrom the CMS pixel-strip integration test performed at the TrackerIntegration Facility at the Meyrin site. (Maximilien Brice, © CERN)

French, Swiss and CERN firemen move rescue equipment through the LHC tunnel. (Maximilien Brice, © CERN)

View of the LHC cryo-magnet inside the tunnel. (Maximilien Brice, © CERN)

Insertion of the tracker in the heart of the CMS detector. (Maximilien Brice, © CERN)

The Z+ end of the CMS Tracker with Tracker Outer Barrel completed. (Maximilien Brice, © CERN)

Viewfrom the surface during lowering of the first ATLAS small wheel intothe tunnel on side C of the cavern. (Claudia Marcelloni, © CERN)

Lowering of one of the two ATLAS muon small wheels into the cavern. (Claudia Marcelloni, © CERN)

View of the ATLAS detector during July 2007 (Claudia Marcelloni, © CERN)

Awelder works on the interconnection between two of the LHC'ssuperconducting magnet systems, in the LHC tunnel. (Maximilien Brice, ©CERN)

View of the CMS detector at the end of 2007. (Maximilien Brice, © CERN)

Transporting the ATLAS Magnet Toroid End-Cap A between building 180 to ATLAS point 1. (Claudia Marcelloni, © CERN)

Viewof the ATLAS cavern side A beginning of February 2008, before loweringof the Muon Small Wheels (Maximilien Brice; Claudia Marcelloni, © CERN)

The L3 magnet in the ALICE cavern, with one door almost closed. (Mona Schweizer, © CERN)

Lowering of the last element (YE-1) of the CMS detector into its underground experimental cavern. (Mona Schweizer, © CERN)

Thefirst ATLAS Inner Detector End-Cap after complete insertion within theLiquid Argon Cryostat. (Claudia Marcelloni; Max Brice, © CERN)

Aerialview of CERN and the surrounding region of Switzerland and France.Three rings are visible, the smaller (at lower right) shows theunderground position of the Proton Synchrotron, the middle ring is theSuper Proton Synchrotron (SPS) with a circumference of 7 km and thelargest ring (27 km) is that of the former Large Electron and Positroncollider (LEP) accelerator with part of Lake Geneva in the background.(© CERN)

More links and information
LHC - Official site
Large Hadron Collider - Wikipedia entry
LHC commissioning with beam CERN's website for commissioning the LHC
What is the LHC? - US/LHC (US at the Large Hadron Collider)
Let the Proton Smashing Begin - NYTimes.com 7/29
LHC - NYTimes Topics page

作者: Snowpine 时间: 2008-8-3 21:29

图一个都显示不了哦！

作者: 月光不锈 时间: 2008-8-3 22:54

红XX。老沙

作者: 天灵灵地灵灵 时间: 2008-8-3 23:46

我看得很好

作者: Mallon 时间: 2008-8-4 07:35

晕，我都能够显示啊

作者: 脱库啦 时间: 2008-8-4 13:00

en ,怪物

作者: 醉卧孤烟 时间: 2008-8-4 16:21

啥名堂也看不出来

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